my kids tank is in the same room as our wood burning fire place which heat our house almost all the time. what you can do is turn your furnace fan on to constant and whar the retur vet is go to the top of the wall and cut a hole place a grate over. Then make sure that your furnace is drawing return air from that hole insted of down at floor level. This will drop tha mabient temp level and heat the whole house better

Bill